What Is AhaSend? Key Facts and Limits - AhaSend

AhaSend is a European transactional email service for developers: send through a REST API, SMTP relay, CLI or the official Node.js and Go SDKs, with data stored in the EU and 1,000 free emails per month.

Company and Service

Fact	Details
Company	AhaSend B.V.
Data location	All message data is stored in the EU. `send-us.ahasend.com` is a US connection point that accepts SMTP and forwards it to the EU.
Delivery speed	Typical delivery under one second to Gmail and under five seconds to other major mailbox providers.
Pricing model	Free, Pro and Max plans with included monthly volume and usage-based overage; no long-term contracts. See current pricing.
Status	Service status
Data protection	Data processing agreement
Official profiles	X, LinkedIn, GitHub

Plans and Features

Feature	Free	Pro	Max
Emails included per month	1,000	25,000	100,000
Sending domains	3	Unlimited	Unlimited
Metadata retention	1–7 days	1–14 days	1–30 days
Message data retention	1–7 days	0–14 days (0 needs approval)	0–30 days (0 needs approval)
Dedicated IPs	No	Add-on from 100k/month, included from 300k	Included from 300k/month
Dedicated IP pools, automated IP warm-up	No	No	Yes
Bring your own IP	No	No	Add-on
S3 archiving, DSN reports, OIDC single sign-on	No	No	Yes
Sub-accounts, DNS whitelabel, per-domain DKIM selectors and bring-your-own DKIM	Platform Partners	Platform Partners	Platform Partners
Support	Community, best effort	Every day 9:00–21:00 CEST	Premium, 4-hour response time
API, SMTP, sandbox, webhooks, inbound routing, tracking, 2FA and 2FA enforcement, scoped keys, IP allow lists, Reputation Shield, signed webhooks and routes, automatic DKIM rotation	Yes	Yes	Yes

Platform Partner features require the Platform Partner program. Contact sales about access. New accounts keep message metadata and message data for 7 days. Zero data retention needs approval from AhaSend, to prevent abuse. Per-message retention headers are capped at the plan’s maximum. See retention settings.

Connection Settings and Limits

Setting	Value	Details
API base URL	`https://api.ahasend.com`	Authentication
API request limit	100 requests per second with bursts of 200	API rate limits
Statistics, stream and trigger endpoints	1 request per second	API rate limits
Create Message recipients	Up to 100 per request	Send email
Scheduled sending	First attempt within 7 days; expiry within 8 days	Create Message
SMTP hosts	`send.ahasend.com` (EU); `send-us.ahasend.com` (US connection point)	SMTP settings
SMTP ports and encryption	25, 587 and 2525; STARTTLS on all ports; AUTH PLAIN only after STARTTLS	SMTP settings
Implicit TLS on port 465	Not supported	SMTP settings
SMTP message size	20 MB, including encoded attachments	SMTP limits
SMTP recipients	Up to 50 per message	SMTP limits
SMTP messages per connection	10,000	SMTP limits

Hourly sending limits start low for new accounts and grow with account age, plan and sending reputation; support can raise them. API request limits and included monthly email volume are separate limits.