SendGrid Pricing for AI Email Marketing: What to Pay and Which Plan Fits

The Short Answer

AI email marketing covers three things: help writing copy and subject lines, optimization of what you send and when, and agent-style workflows that build or run sequences for you. Most low-cost email platforms sell sending first, and any AI sits on top at a higher plan. SendGrid belongs to that first group. Its Email API is a volume-priced sending layer for developers, and its Marketing Campaigns product is a separate, contact-priced tool for marketers. Neither product's published plan details name an AI writing or optimization feature.

That makes the choice simple to frame. If your team has developers and the emails are receipts, password resets and alerts, SendGrid's volume pricing is clear and low at the entry point. If your team is made up of marketers who want AI to draft, test and run lifecycle emails from one place, price a vendor that names AI features in its plans, such as Customer.io, before you commit to anything.

The price you see first is rarely the price you pay. Essentials is $19.95 per month, but a production setup with dedicated IP options, validation and support costs more, and a marketing list adds a second bill on Marketing Campaigns. The rest of this page sets out the plan names, the prices and the list sizes they apply to, so you can add up the real cost for your own list.

What Counts as AI on a Pricing Page

A pricing page rarely explains how an AI feature works. It shows the feature as a line inside a plan, a credit allowance or a usage limit. So the first step is to read each plan's contents line by line and separate three kinds of claim: named AI features, AI usage limits, and optimization tools that are not AI but still help you improve results.

Customer.io is the clearest example in this group. Its Essentials plan lists AI Agent core skills, and its Premium plan lists elevated AI Agent limits, which tells you the AI is metered by plan. Brevo's Standard plan includes A/B testing and advanced reports. A/B testing is not AI, but it is the nearest thing to measured optimization in the published price tables, and it is worth pricing for a team that wants to test subject lines without buying an AI product. ActiveCampaign and Loops do not name AI writing features in the plan details shown on their pricing pages, so treat them as sending and automation tools until you confirm otherwise with the vendor.

SendGrid's pricing tells you about volume, contacts, IP options and support. It does not tell you about AI writing. If an AI writing assistant is a requirement, ask SendGrid directly, check its current product documentation and test the feature before you sign a contract.

Comparison at a Glance

The table below sets out six tools by best use, entry price with plan and billing basis, and the main limitation for a buyer who cares about AI. Prices are the published figures on each vendor's pricing page, checked on 7 October 2026. Where a vendor's price depends on contact or profile count, the starting figure is shown with that basis.

No single row wins on every axis. SendGrid is the lowest-priced sending engine for developers, Customer.io is the one that names AI features in its plans, and the others sit between them on automation, testing and free allowances. The per-tool sections below explain each row, and the cost table later on the page shows the same vendors at three list sizes.

SendGrid: Strong Sending Infrastructure, No Named AI Features

SendGrid works well for a development team that needs reliable transactional sending with a volume-priced bill. The Email API is priced by monthly volume bands, so receipts, password resets and alerts scale in predictable steps. The 60-day trial at 100 emails per day gives you room to test an integration and check delivery before you pay. Dedicated IP options and subuser management sit on the Pro tier, which is the point where a multi-brand or high-volume sender usually moves up.

Where it falls short for AI email marketing is clear. Nothing in the published SendGrid pricing describes AI writing, AI-generated sequences or automated optimization. Marketing Campaigns adds templates and automation for marketers, but it is priced by contacts and billed separately from the Email API, so a team that buys both pays twice. Nothing in the pricing describes triggers tied to billing events either, so a trial-to-paid sequence built on SendGrid means your own engineering work. That is a reasonable trade for a developer team and a poor one for a marketing team that wants to ship sequences without code.

The published figures are as follows. Email API Essentials is $19.95 per month for the 50,000 to 100,000 emails band. Email API Pro is $89.95 per month for the 100,000 to 2,500,000 emails band. Premier is priced on request for 2,500,000 emails and above. Marketing Campaigns Free covers up to 2,000 contacts and 6,000 emails per month at $0. Marketing Campaigns Basic is $15 per month for up to 100,000 contacts and 300,000 emails, and Advanced is $60 per month for up to 200,000 contacts and 1,000,000 emails. Check the current bands on the Twilio SendGrid pricing page before you buy.

Customer.io: The Plan That Names AI Agent Features

Customer.io is the tool to price first if AI is part of the brief. Its Essentials plan names AI Agent core skills, a visual workflow builder, email and community support, and basic data integrations. For a marketing team that wants event-driven lifecycle emails, the workflow builder is where the AI and the sending meet, so you can see what the AI does inside the same product that sends the email. The Premium plan adds custom profile volume and pricing, elevated AI Agent limits and premium support.

The limitations come from the pricing model. Customer.io prices by profiles and email volume, so the bill grows as your audience grows. The Essentials base price is $100 per month, and the lowest published profile tier is 10,000 profiles at $145 per month. The profile tiers then step up by $90 per 10,000 profiles: $235 at 20,000, $325 at 30,000, $415 at 40,000, and $505 at 50,000 or more, shown as $505+. If your list is small, the base price may be high for your audience. If your list is large, the steps add up quickly.

Eligible early-stage companies that have raised under $10 million can receive 12 months free through the Startup Program, which can change the first-year cost for a young company. Customer.io's Premium plan lists $1,000 per month with custom profile volume and pricing, so a large list should be quoted against that tier directly. Check the current figures on the Customer.io pricing page, and read our Customer.io pricing guide for more on how profiles are counted.

ActiveCampaign: Automation and Segmentation on a Contact Plan

ActiveCampaign suits marketers who want a deep set of automation and segmentation tools and do not need a separate AI product. The Starter plan at $15 per month includes email marketing, marketing automation, standard CRM and ecommerce integrations. Plus adds standard segmentation and landing pages at $49 per month. Pro adds advanced segmentation at $79 per month, and Enterprise adds premium segmentation and a dedicated account team at $145 per month. Each figure is a starting price at 1,000 email contacts, and the price scales with the contact count.

The limitation for an AI-led buyer is that the pricing page does not name AI writing or optimization features in its plan details. A free trial is available, but there is no permanent free plan. ActiveCampaign is a reasonable choice when segmentation depth matters more than AI, and a weaker one when the main requirement is AI drafting or automated copy. Contact growth also changes the bill: a list that moves from 1,000 to 5,000 contacts needs a price at the larger count, and the starting figures are only a floor.

Published prices: Starter $15 per month, Plus $49, Pro $79 and Enterprise $145, each starting at 1,000 contacts. This page does not estimate prices above that starting point. The ActiveCampaign pricing page has the current contact selector, and our ActiveCampaign pricing guide goes deeper on the tiers.

Brevo: Monthly Volume Pricing and Built-In A/B Testing

Brevo is the strongest choice here for teams that want testing on a modest budget. The Free plan allows 300 sends per day and storage for up to 100,000 contacts. Starter is $9 per month for a volume that starts at 5,000 emails per month, with no daily sending limit. Standard, at $18 per month on the same starting volume, adds automation, A/B testing and advanced reports. A/B testing is not AI, but it is a measured way to improve subject lines and content, which is the optimization part of the AI question.

The limitation is the step to Professional. It is $499 per month for 150,000 to 10 million monthly sends and up to 2 million contacts, a large jump from Standard. On the yearly option, Professional is shown at $449.08 against the $499 monthly figure. Brevo does not name AI writing features in the plan details on its pricing page, so confirm any AI requirement with the vendor.

Published prices: Free $0 with 300 daily sends and up to 100,000 contacts; Starter $9 per month from 5,000 emails per month; Standard $18 per month on the same starting volume; Professional $499 per month for 150,000 to 10 million sends. Check the Brevo pricing page for current volume bands, and our Brevo pricing guide covers the plan structure in more detail.

Mailchimp: A Free Start with Contact-Based Steps

Mailchimp is a good first tool for a very small list. The Free plan covers up to 250 contacts and 500 sends per month. The Standard plan is $20 per month at 500 contacts, with up to 6,000 emails per month at that contact count, and Essentials at 500 contacts is $13 per month on monthly billing. A 14-day Standard trial is available, and a free-month Premium offer is also shown on the pricing page. Once a list grows past the free limits, Mailchimp's contact tiers set the price, and each tier carries a monthly send allowance.

The limitation is that the price steps sharply by contact count. Between 2,501 and 5,000 contacts the price is $100 per month for up to 60,000 emails. Between 5,001 and 10,000 contacts it is $135 per month for up to 120,000 emails, and between 10,001 and 15,000 contacts it is $230 per month for up to 180,000 emails. Contact counts outside those published tiers have no price in the captured pricing data, so the page cannot price every list size. Mailchimp's pricing page does not name AI writing features in the plan details, so check the current feature list before you buy for AI.

Published prices: Free $0 with up to 250 contacts and 500 sends per month; Standard $20 per month at 500 contacts; the 2,501 to 5,000 contact tier at $100 per month; the 5,001 to 10,000 tier at $135 per month; and the 10,001 to 15,000 tier at $230 per month. Confirm the figures on the Mailchimp pricing page.

Loops: A Free Start for Small, Active Audiences

Loops suits a product team that emails a small, engaged audience and wants transactional sends included. The Early Stage plan is free for up to 4,000 sends in any rolling 30-day window, sent to the 1,000 newest contacts, with all features included and a rate of 10 emails per second. The Growing Audience plan is $99 per month and allows unlimited sends to subscribers, plus transactional sends to users outside your audience, with all features included.

The limitations are the free-plan caps and the footer. The free plan sends only to the newest 1,000 contacts, so an older list does not get the full benefit, and free-plan emails carry a Loops footer. Loops does not name AI writing features in the plan details on its pricing page, so teams that need AI drafting should check the current product before they move to Growing Audience. For a small team, the $99 plan includes all features, which makes the bill simple to forecast.

Published prices: Early Stage $0 with up to 4,000 sends in a rolling 30 days; Growing Audience $99 per month. The Loops pricing page has the current limits, and our Loops pricing guide sets out the contact rules in more depth.

What It Costs at Three Realistic List Sizes

List size moves most price tables, so the table below sets each plan against three list sizes. The scenario assumes one send to the whole list each week, which is four sends a month, so a 1,000-contact list sends 4,000 emails in a month, a 5,000-contact list sends 20,000 and a 20,000-contact list sends 80,000. Only published figures are shown. Where a vendor does not publish a price at the size you need, the cell says so, and you should ask the vendor for a quote rather than estimate.

Three worked examples show how to read the table. A list of 1,000 contacts mailed four times a month needs 4 × 1,000 = 4,000 sends. On SendGrid Marketing Campaigns Free, that is inside the 6,000 email allowance for up to 2,000 contacts, so the monthly price is $0. On Loops Early Stage, 4,000 sends in a rolling 30 days is exactly the free limit, so the price is also $0, but the free plan only reaches the 1,000 newest contacts.

A list of 5,000 contacts mailed four times a month needs 4 × 5,000 = 20,000 sends. SendGrid Marketing Campaigns Basic covers 5,000 contacts and that volume within its limits, at $15 per month. Mailchimp's 2,501 to 5,000 contact tier covers up to 60,000 emails at $100 per month, so the same volume fits at a much higher price. Customer.io's lowest published profile tier is 10,000, so a 5,000-profile list has no published tier, and you should request a quote.

A list of 20,000 contacts mailed four times a month needs 4 × 20,000 = 80,000 sends. SendGrid Marketing Campaigns Basic still covers that count and volume at $15 per month, if you stay within 300,000 emails. Customer.io's 20,000-profile tier is $235 per month, and the gap is the clearest signal in this table: Customer.io prices audience size directly, while SendGrid's Campaigns plan prices contacts within a band. The published data is incomplete for some sizes, so use this table as a shortlist filter and confirm the final figure on each vendor's selector.

Which Plan for Which Job

The decision table is built around the job you need done, not the brand. Each row names the plan that fits the job, the reason it fits, and the one thing to check before you buy.

Read the table against your own list and your team. A developer team that sends receipts and alerts has no need for a marketing product, so the Campaigns rows do not apply. A marketing team that wants AI in the workflow should not choose on the SendGrid sticker, because the sticker does not show AI features.

How to Choose an AI-Ready Email Plan

Start with the job, not the vendor. Write down who builds the emails, who sends them and what the emails are for. If developers own the sends and the emails are transactional, SendGrid's Email API is the efficient choice, and the AI question is mostly irrelevant. If marketers own the sends and want AI to draft and test copy, the plan has to name AI features or credits, and Customer.io is the one of the six that does so in its plan details.

Next, price the list you will have in twelve months, not the list you have today. Contact-based pricing rises with growth, and the steps can be large. Mailchimp moves from $20 at 500 contacts to $100 at the 2,501 to 5,000 tier, and Customer.io moves from $145 at 10,000 profiles to $235 at 20,000. A plan that fits today can cost several times more after a year of growth, so forecast the next step before you sign.

Then check what the entry price leaves out. SendGrid's dedicated IP and support costs sit above the base band. Customer.io's Premium is a large step beyond Essentials. Brevo's Professional is a large jump from Standard. Loops' free plan limits sends to the 1,000 newest contacts. Each of these is a line to price, not an afterthought.

Finally, test the AI on your own content before you pay for the plan. Ask the vendor for the current feature list in writing, run a trial where one is offered, and measure the output against your brand rules. The pricing page is the starting point for the budget, and the trial is the real test of whether the AI helps your team.

Setup and Migration Checklist

If you are moving to SendGrid, or away from it, most of the work is in the data and the sending domain, not the plan. The checklist below sets out the steps in order, with the reason for each. It applies to a team comparing plans on this page, and it is useful whichever vendor you pick.

For SendGrid specifically, decide early whether marketing sends stay on the Email API or move to Marketing Campaigns. Keeping them on the API avoids the contact bill, but your team then builds the campaign tooling. Moving them to Campaigns brings templates and automation, along with a second bill based on contacts. Make that decision before step five, because the suppression list has to move with the sends.

How to Check an AI Claim Before You Pay

AI features change faster than pricing pages, so treat any AI claim as something to verify rather than assume. Three questions separate a real feature from a label. First, is the AI named as a feature in the plan you are buying, or only mentioned in marketing copy? Customer.io's Essentials plan names AI Agent core skills as part of the plan, which is a clearer signal than a general reference to AI. Second, is the AI metered by credits, limits or usage? A higher tier with elevated AI limits tells you the AI is part of the price structure, and you should check the limits before you need them. Third, can you test the feature before you buy? A trial or demo lets you measure output against your brand rules.

For SendGrid, the answer to the first question is no: the published pricing does not name AI writing or optimization. That does not rule out such features later, but the price on this page does not pay for them. For the other tools, the plan details did not name AI writing features, with the exception of Customer.io, so check the current product documentation before you assume they are included.

Keep a short written record of what you checked and when. AI features and plan limits change, and a record lets you show what you were promised if the terms change at renewal.

Who Should Still Choose SendGrid

SendGrid is the right pick for a development team that owns its sending and needs dependable transactional mail at a volume-based price. It also fits a team that already keeps its lifecycle logic in code and wants a clear unit cost per send. The 60-day trial at 100 emails per day is a practical way to validate an integration, and Essentials at $19.95 per month is the lowest sending entry point in this comparison.

SendGrid is the wrong pick for a marketing team that wants AI drafting, automated optimization or a visual lifecycle builder in one product. In that case, price Customer.io first, then compare the total cost with a SendGrid setup that includes the engineering work to build triggers and templates. The cheapest sticker is not always the cheapest total cost.

SendGrid for AI Email Marketing: FAQs