Where the 4.5 and the 3.1 come from
On Capterra, 398 reviews give 4.5/5, with 4.5 for ease of use, 4.5 for features, 4.4 for value for money and 4.2 for customer service, its weakest score. On Trustpilot, 1,352 reviews give 3.1/5: 46% five stars, 36% one star, and only 18% in between. Apollo answers 6% of the negative ones.
Most cited strengths
- A large database with fine filters
- List, sequence and follow-up in one tool
- Campaigns quick to start
- The Chrome extension
- Value for money against ZoomInfo
Most cited weaknesses
- Wrong or outdated contacts, bounces
- Phone numbers outside the US
- Credits that run out and expire
- Slow or contradictory support
- Frequent price changes
Data accuracy: bounces, outdated contacts and phone numbers outside the US
The most common complaint concerns the data itself: emails that bounce, people who changed jobs, and phone numbers that are less reliable outside the United States, in Europe especially. Apollo, for its part, claims 98% email accuracy.
Its rules soften the email side: 1 credit is charged only when a verified email is found, and it is given back at the next cycle if the email, sent from Apollo, bounces within 30 days. Phone numbers get no such refund: 8 credits each, kept even when the number is wrong.
For a team prospecting in Europe, the useful test is therefore a sample of its own market during the trial, phone numbers included, before paying for a year.
The praise: database size, one workflow from list to sequence, value against ZoomInfo
Positive reviews start with the database: 240M contacts and 30M companies according to Apollo, filters precise enough to build a list in minutes, and the free plan to try it. Then comes the fact that everything follows in the same tool: the list becomes a sequence, replies land in one inbox, calls and meetings are logged against the contact.
The Chrome extension comes up often: on a LinkedIn profile or in Gmail, it shows the contact’s email and phone number without switching tabs. Capterra reviewers who compare it with ZoomInfo find Apollo the better value.
Credits that vanish at renewal, and the other cost complaints
Many one-star reviews are about money rather than the product. Credits do not roll over: included or bought, they reset at the end of each cycle, and on yearly billing the whole year’s credits expire together. Phone numbers, at 8 credits, and warm-up, at 200 credits per extra mailbox a month according to the help centre, empty the pot faster than users expect.
Then the contract: Apollo’s FAQ describes cancelling in the app, effective at the end of the billing cycle, whereas its terms require written notice of non-renewal at least 30 days before the renewal date. The terms say fees are non-refundable. Prices also moved during the year: Basic went from $59 to $65 a month, and the free plan from 100 to 75 credits, so older reviews quote other figures. Details on the Apollo pricing page.
Support, mailbox setup and a heavy interface
Customer service has the lowest Capterra sub-score (4.2/5), and Trustpilot reviewers describe slow or contradictory answers. Self-service cancellation is not available to every team, according to Apollo’s help centre, which sends the others to chat.
Reviewers also find connecting mailboxes and setting up warm-up harder than the rest, and the interface heavy. That matches the scope of the product: 200+ workflow apps, AI agents, a dialer, meetings and deal tracking on top of the database.
Reading the reviews by team: US outbound, European SMB, LinkedIn-first
A US outbound team that calls
The reviews are kindest here: the database, the US dialer (2 credits a minute) and phone numbers at 8 credits fit a team that emails and calls American prospects.
A small European company
The complaints about phone data outside the US, billing in dollars only and card-only payment matter more. Apollo also notes that its Chrome extension does not filter out EU and UK contacts and that checking GDPR is up to you.
A team that prospects on LinkedIn first
Apollo turns LinkedIn steps into manual tasks. A team that sends most of its outreach on LinkedIn will do it by hand, or add a tool: Emelia automates 1 to 10 LinkedIn accounts in the same sequence as email, from €37 a month for the plan.
Apollo.io reviews: the questions behind the scores
Apollo claims 98% email accuracy. Reviews are more mixed: bounces, outdated job titles and phone numbers outside the US are the usual complaints. Emails are charged only when verified and refunded if they bounce within 30 days; phone numbers are not refunded.
The two sites do not collect the same reviews. Trustpilot (3.1/5) splits between 46% five-star and 36% one-star reviews, many about credits and support; Capterra (4.5/5) rates the product on four criteria.
Apollo displays 4.7/5 from 9,690 G2 reviews. G2 blocks automated checks, so we could not confirm it on G2 itself on October 7, 2026; the Capterra and Trustpilot figures above were read on those sites.
Yes, for emails sent from Apollo that bounce within 30 days: the credit comes back at the next billing cycle. Phone number credits are never refunded, and subscription fees are non-refundable under its terms.
Emelia is an Apollo.io competitor. We have tried to stay fair: every figure about Apollo.io comes from its own website or public review sites.
